What color coding is typically used for 120/240V wiring?

The typical color coding for 120/240V wiring is standardized to facilitate safety and ensure easy identification for electrical professionals and technicians. In this system, black and red wires are designated as hot wires, which carry electrical current. These colors are essential for identifying the correct wires for connecting to power sources and equipment while ensuring that the technician understands where the live connections are located to work safely.

The white wire serves as the neutral, which completes the electrical circuit by returning current back to the source, and is crucial for the safe operation of the system. Finally, the green or bare wire is used for ground, providing a path for electrical current to safely dissipate in case of a fault or short circuit, which is vital for preventing electrical hazards.

Understanding this color coding helps electrical contractors and workers maintain safety protocols and adhere to established standards, reducing the risk of mistakes that could lead to electrical shocks or equipment damage. The other options feature incorrect combinations that do not align with the widely accepted codes for residential and commercial electrical systems, which can lead to confusion and potential hazards during installation and repairs.